CHEM 2262 Chapter : Chap 20 Page 6
Document Summary
Nature of a fossil: bones and teeth are destroyed by physical, chemical, and biological forces, fossilization- protection from forces of destruction (ex. Explains geographical distribution of early primates: africa was an island continent prior to 19 mya. Explain geographical distribution of apes during the miocene: problem issue: colonization of madagascar by lemurs, madagascar was an island before the emergence of primates, theory is that lemurs colonized madagascar by crossing the. If you accept thesis that nw monkeys rafted to south america on floating vegetation, then there are anthropoids in africa with same dental formula as. In early miocene, africa was an island continent, separated from europe and. About 19 mya, arabian plate partly separated from africa and contacted sw asia, forming a migratory corridor. Prior to this plate tectonic event, hominoids were restricted to africa; after this event, hominoids were distributed in africa, europe, and asia: african taxa, 23-14 mya ( ex. Lake turkana, kenya: republic of south africa.
